Special features: The Harley effect; Loren Lester: in his own voice; Plus: a sneak peek at DC Universe's nex animated movie: Batman: Gotham by Gaslight; A sneak peek at Batman: the Dark Knight returns, part 1 and part 2; A sneak peek at Batman: assault on Arkham; From the DC Comics vault: Batman: the animated series, "Harley and Ivy" and "Harley's holiday."

Special features: The Harley effect; Loren Lester: in his own voice; Plus: a sneak peek at DC Universe's nex animated movie: Batman: Gotham by Gaslight; A sneak peek at Batman: the Dark Knight returns, part 1 and part 2; A sneak peek at Batman: assault on Arkham; From the DC Comics vault: Batman: the animated series, "Harley and Ivy" and "Harley's holiday."